Chimney-cowl



No Model.)

M LUDWIG, JAMES S. & JOHN S. BARBER.

CHIMNEY GOWL.

No. 308,317. Patented Nov. 18, 1884.

WITNESSES: Z INVENTOR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

MARTIN LUDW'IG, JAMES S. BARBER, AND JOHN S. BARBER, OF BELOIT,

' KANSAS.

CHlMNEY-COWL.

EPECIFICATION forming part of Letters Patent No. 308,317, dated November18, 1884.

Application filed December 8, 1883. (No model.)

To all whom it may concern Be it known that we, MARTIN LUDWIG, JAMES S.BARBER, and Joan S. BARBER, of Beloit, in the county of Mitchell andState of Kansas, have invented a new and useful Improvement inOhimney-Oowls, of which the following is a full, clear, and exactdescription, reference being bad to the annexed drawings, forming partof this specification.

This invention consists of the novel construction, hereinafter describedand claimed, whereby a stationary chimney-cowl is adapted to preventdownward currents of air in the chimney when the wind is blowing fromany direction whatever.

In the drawings, Figure 1 is a side elevation of our improvedchimney-cowl. Fig. 2 is a vertical section of the same, and Fig. 3 is abottom View.

A indicates the flue or cylinder of the cowl by which the device is tobe attached to a chimney or pipe.'

Attached to the upper edge of and arranged around the cylinder A is azigzag flange,.B, or series of bent plates forming such a flange.

and to the shoulders C of this flange is secured acap, D. The lower endsor points, E, of the flange project downward and outward from thecylinder A, forming passages F, leading up ward by the flange B andspiral folds G. This upward deflection of air-currents causes an upwarddraft in the chimney, which carries off the smoke, no matter from Whatdirection the wind blows orupon what part of the cowl it strikes.

We are aware that a zigzag flange for de fleeting air-currents upwardhas been used in chimney-cowls in connection with a'closc cap, or onehaving no openings above its base, and that a conical cap formed of aspirally-arranged plate has been used in connection with an inner closecap or hollow cone having no opening above its base. These constructionswe disclaim. In our invention the cap forms a chamber, J, with thecylinder or chimney, which chamber communicates directly with thechimney-flue and with the spiral opening I in the cap, and the opening Iis so formed that the current of air and smoke may escape from the capin a nearly horizontal direction, preventing any danger of the smokebeing dellected down the chimney.

\Vhat we claim is- The combination of the cylinder or chimney A, theflanges B, secured around the top of said cylinder to guide currents ofair upward, and the open spiral cap D, forming an open chamber, J,communicating with the flue and with the spiral opening I in the cap,said cap having blocks H arranged between its folds to form saidopening, and said opening extending nearly horizontally outward throughthe cap, substantially as shown and described.

MARTIN LUDVVIG. JAMES S. BARBER. JOHN S. BARBER. Witnesses:

T. J. MORRIS, T. B. LAMB.

